Hammer for shredding-machines.



M. F. WILLIAMS.

HAMMER FOR SHREDDING MACHINES.

APPLICATION FILED MAY 18, 1908.

906,846. Patented Dec. 8; 1908.

UNITED STATES PATENT OFFICE.

MILTON F. WILLIAMS,'OF ST. LOUIS, MISSOURI, ASSIGNOR TO WILLIAMS PATENT CRUSHER- & PULVERIZER COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF MISSOURI.

HAMMER FOR SHREDDING-MACHINES.

Specification of Letters Patent.

Patented Dec. 8, 1908.

Application filed. May 18, 1908. Serial No. 433,483.

Figure 1 is a vertical sectional view of a machine provided with hammers constructed in accordance with my invention; Fi 2 is an enlarged perspective View of one of t e hammers; Fig. 3 is an end view of a number of hammers; and Fig. 4 is a view similar to Fig. 3 for the purpose of illustrating the action of the hammers on the material. I This invention relates to the hammers or cutting members of machines that are used for shredding or cutting hay, straw, alfalfa and similar material. i

The main object of my invention is to provide a hammer which is so constructed that it will sever the material with a shearin out and also draw the material into the mac ine. Referring to the drawings which illustrate the preferred form of my invention, 1 designates a rotating shaft provided with disks 2 which carr a plurality of transversely extending r0 s 3 on which transverse rows of hammers or, cutting members A. are pivotally mounted. Said hammers cooperate with a grinding surface 4 that may be of any preferred design, and each hammer consists of an approximately straight shank provided at its outer end with a strikin point 5 e that projects forwardly beyond t e front edge 6 of the hammer. The end face 7 of the hammer recedes inwardly from the striking point 5 so that it cooperates with the straight rear edge of the hammer to form an angularshaped heel 7 and the underneath side of the striking point 5 curves inwardly, as shown in Fig. 2, so as to form a curved throat ortion 8 which tends to throw the materia disintegrated by the hammer inwardly into the machine. f

The side faces of the striking oint or forwardly projecting portion of the iammer are beveled off at 9 so as to form an approximately wedge-shaied striking point, as shown in Figs. 3 and 4. ihe narrow portion the grindin of the wedge is located at the forward end of l the striking point so that the hammer is provided at its outer end with two sharp cutting edges 10 that are disposed at an angle to the front edge of the shank of the hammer and also at an angle to the vertical plane in which the hammer moves. Conse uently when said edges strike the material t ey will pass through it with a shearin out and thus completely sever the materia In view of the fact t at the striking mer is wedge-sha ed the ammers of each transverse row 0 hammerswill cooperate clearly in Fig. 4. The hammers are so'ar-.

ranged that the hammers of one transverse row will be located intermediate the hammers of the ad'acent transverse rows, as

point of the hamshown in dotted ines in Figs. 3 and 4, thereby causing the material to be severed or out into small particles, the chunks or small portions of material which the hammers of one transverse row have produced being severed by the hammers of the succeeding transverse row. By providing the hammer with a wedge-shaped cutting portion and an end face which recedes inwardly or away from surface of the machine, the hammer wil clear the material or draw out of it easilyafter it has severed the material.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A hammer for the purpose described, consisting of a shank provided with a striking point that projects forwardly beyond the front edge of the shank, said striking point having a wedge-shaped portion, and cutting edges that are disposed at an an le to the vertical lane in which the shank moves; substantially as described.

2. A hammer for the pur ose described, consisting of a shank provi ed at its outer end with a pair of inclined divergin cutting edges that are disposed at an ang e to the vertical plane in which said shank moves; substantially as described.

3. A hammer for the pur ose described, consisting of a shank provi ed at its outer end with a forwardly" rojecting strikin point, the side faces of wl iichare beveled 0 so as to produce two inclined diverging cutting edges; substantially as described.

' 4; A. hainmerfor the purpose described, derneath side of which curves inwardl and comprising a shank havin a forwardly promerges into the front edge of said shan the 5 jecting portion and an en face'that recedes lnwardly, the sides of said forwardly projecting ortion being beveled ofi so as to produce inclined cutting edges that are disposed at an angle to the side faces of the shank; substantially as described.

5.- A machine of the character described, having a Elurality of staggered rows of hammers, eac of which consists of a shank provided with a receding end face and a forwardly projecting striking portion, the un- I this thirteenth side'faces of said forwardly projecting portion being beveled 'ofi? so as to produce a wedge-shaped striking end having inclined cutting edges; substantially as described.

. In testimong whereof I hereunto afiix my. 20 signature in t e presence of two witnesses,

day of May 1908.

MILTON F. WILLIAMS.

Witnesses: l

F. R. CORNWALL, v GEORGE BAKEWELL. 

